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	<title>API: yuitest  YAHOO.util.ArrayAssert   (YUI Library)</title>

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        <h1><a href="http://developer.yahoo.com/yui/" title="Yahoo! UI Library">Yahoo! UI Library</a></h1>
        <h3>yuitest&nbsp; <span class="subtitle">2.9.0</span></h3>
        <a href="./index.html" title="Yahoo! UI Library">Yahoo! UI Library</a> 
            &gt; <a href="./module_yuitest.html" title="yuitest">yuitest</a>
                 &gt; YAHOO.util.ArrayAssert 
                
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                    <h2>
                        

                        <code>static</code>
                        
                            Class <b property="yui:name">YAHOO.util.ArrayAssert</b>
                        <span class="extends">
                        </span>

                    </h2>
                    <!-- class tree goes here -->
                    
                
  

                    <div class="summary description" property="yui:description">
                        The ArrayAssert object provides functions to test JavaScript array objects
for a variety of cases.
                    </div>

                    
                    <div rel="yui:properties" resource="#properties">

                    </div>

                    <div rel="yui:methods" resource="#methods">
                        <div class="section method details">
                            <h3 id="methods">Methods</h3>
                            <div class="content">
                                    <div class="" rel="yui:method" resource="#method_contains">
                                    <h4>
                                        <a name="method_contains">contains</a></h4>
                                    <div class="detail" >
                                        <code>
                                        
                                         static 
                                        
                                        void
                                            <strong property="yui:name">contains</strong>
                                           (
                                                
                                                        
                                                         needle
                                                    
                                                
                                                        , 
                                                         haystack
                                                    
                                                
                                                        , 
                                                         message
                                                    
                                                
                                            )
                                        </code>
                                        
                                        <div class="description" property="yui:description">
                                            Asserts that a value is present in an array. This uses the triple equals 
sign so no type coercion may occur.
                                        </div>

                                        <div class="description">

                                                <dl rel="yui:parameters">
                                                    <dt>Parameters:</dt>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">needle</span>
                                                        &lt;<span property="yui:type">Object</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> The value that is expected in the array.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">haystack</span>
                                                        &lt;<span property="yui:type">Array</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> An array of values.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">message</span>
                                                        &lt;<span property="yui:type">String</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> (Optional) The message to display if the assertion fails.</span>
                                                        </dd>
                                                </dl>



             

                                        </div>

                                    </div>
                                    <hr />
                                    </div>
                                    <div class="" rel="yui:method" resource="#method_containsItems">
                                    <h4>
                                        <a name="method_containsItems">containsItems</a></h4>
                                    <div class="detail" >
                                        <code>
                                        
                                         static 
                                        
                                        void
                                            <strong property="yui:name">containsItems</strong>
                                           (
                                                
                                                        
                                                         needles
                                                    
                                                
                                                        , 
                                                         haystack
                                                    
                                                
                                                        , 
                                                         message
                                                    
                                                
                                            )
                                        </code>
                                        
                                        <div class="description" property="yui:description">
                                            Asserts that a set of values are present in an array. This uses the triple equals 
sign so no type coercion may occur. For this assertion to pass, all values must
be found.
                                        </div>

                                        <div class="description">

                                                <dl rel="yui:parameters">
                                                    <dt>Parameters:</dt>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">needles</span>
                                                        &lt;<span property="yui:type">Object[]</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> An array of values that are expected in the array.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">haystack</span>
                                                        &lt;<span property="yui:type">Array</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> An array of values to check.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">message</span>
                                                        &lt;<span property="yui:type">String</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> (Optional) The message to display if the assertion fails.</span>
                                                        </dd>
                                                </dl>



             

                                        </div>

                                    </div>
                                    <hr />
                                    </div>
                                    <div class="" rel="yui:method" resource="#method_containsMatch">
                                    <h4>
                                        <a name="method_containsMatch">containsMatch</a></h4>
                                    <div class="detail" >
                                        <code>
                                        
                                         static 
                                        
                                        void
                                            <strong property="yui:name">containsMatch</strong>
                                           (
                                                
                                                        
                                                         matcher
                                                    
                                                
                                                        , 
                                                         haystack
                                                    
                                                
                                                        , 
                                                         message
                                                    
                                                
                                            )
                                        </code>
                                        
                                        <div class="description" property="yui:description">
                                            Asserts that a value matching some condition is present in an array. This uses
a function to determine a match.
                                        </div>

                                        <div class="description">

                                                <dl rel="yui:parameters">
                                                    <dt>Parameters:</dt>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">matcher</span>
                                                        &lt;<span property="yui:type">Function</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> A function that returns true if the items matches or false if not.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">haystack</span>
                                                        &lt;<span property="yui:type">Array</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> An array of values.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">message</span>
                                                        &lt;<span property="yui:type">String</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> (Optional) The message to display if the assertion fails.</span>
                                                        </dd>
                                                </dl>



             

                                        </div>

                                    </div>
                                    <hr />
                                    </div>
                                    <div class="" rel="yui:method" resource="#method_doesNotContain">
                                    <h4>
                                        <a name="method_doesNotContain">doesNotContain</a></h4>
                                    <div class="detail" >
                                        <code>
                                        
                                         static 
                                        
                                        void
                                            <strong property="yui:name">doesNotContain</strong>
                                           (
                                                
                                                        
                                                         needle
                                                    
                                                
                                                        , 
                                                         haystack
                                                    
                                                
                                                        , 
                                                         message
                                                    
                                                
                                            )
                                        </code>
                                        
                                        <div class="description" property="yui:description">
                                            Asserts that a value is not present in an array. This uses the triple equals 
sign so no type coercion may occur.
                                        </div>

                                        <div class="description">

                                                <dl rel="yui:parameters">
                                                    <dt>Parameters:</dt>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">needle</span>
                                                        &lt;<span property="yui:type">Object</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> The value that is expected in the array.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">haystack</span>
                                                        &lt;<span property="yui:type">Array</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> An array of values.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">message</span>
                                                        &lt;<span property="yui:type">String</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> (Optional) The message to display if the assertion fails.</span>
                                                        </dd>
                                                </dl>



             

                                        </div>

                                    </div>
                                    <hr />
                                    </div>
                                    <div class="" rel="yui:method" resource="#method_doesNotContainItems">
                                    <h4>
                                        <a name="method_doesNotContainItems">doesNotContainItems</a></h4>
                                    <div class="detail" >
                                        <code>
                                        
                                         static 
                                        
                                        void
                                            <strong property="yui:name">doesNotContainItems</strong>
                                           (
                                                
                                                        
                                                         needles
                                                    
                                                
                                                        , 
                                                         haystack
                                                    
                                                
                                                        , 
                                                         message
                                                    
                                                
                                            )
                                        </code>
                                        
                                        <div class="description" property="yui:description">
                                            Asserts that a set of values are not present in an array. This uses the triple equals 
sign so no type coercion may occur. For this assertion to pass, all values must
not be found.
                                        </div>

                                        <div class="description">

                                                <dl rel="yui:parameters">
                                                    <dt>Parameters:</dt>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">needles</span>
                                                        &lt;<span property="yui:type">Object[]</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> An array of values that are not expected in the array.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">haystack</span>
                                                        &lt;<span property="yui:type">Array</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> An array of values to check.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">message</span>
                                                        &lt;<span property="yui:type">String</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> (Optional) The message to display if the assertion fails.</span>
                                                        </dd>
                                                </dl>



             

                                        </div>

                                    </div>
                                    <hr />
                                    </div>
                                    <div class="" rel="yui:method" resource="#method_doesNotContainMatch">
                                    <h4>
                                        <a name="method_doesNotContainMatch">doesNotContainMatch</a></h4>
                                    <div class="detail" >
                                        <code>
                                        
                                         static 
                                        
                                        void
                                            <strong property="yui:name">doesNotContainMatch</strong>
                                           (
                                                
                                                        
                                                         matcher
                                                    
                                                
                                                        , 
                                                         haystack
                                                    
                                                
                                                        , 
                                                         message
                                                    
                                                
                                            )
                                        </code>
                                        
                                        <div class="description" property="yui:description">
                                            Asserts that no values matching a condition are present in an array. This uses
a function to determine a match.
                                        </div>

                                        <div class="description">

                                                <dl rel="yui:parameters">
                                                    <dt>Parameters:</dt>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">matcher</span>
                                                        &lt;<span property="yui:type">Function</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> A function that returns true if the items matches or false if not.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">haystack</span>
                                                        &lt;<span property="yui:type">Array</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> An array of values.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">message</span>
                                                        &lt;<span property="yui:type">String</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> (Optional) The message to display if the assertion fails.</span>
                                                        </dd>
                                                </dl>



             

                                        </div>

                                    </div>
                                    <hr />
                                    </div>
                                    <div class="" rel="yui:method" resource="#method_indexOf">
                                    <h4>
                                        <a name="method_indexOf">indexOf</a></h4>
                                    <div class="detail" >
                                        <code>
                                        
                                         static 
                                        
                                        void
                                            <strong property="yui:name">indexOf</strong>
                                           (
                                                
                                                        
                                                         needle
                                                    
                                                
                                                        , 
                                                         haystack
                                                    
                                                
                                                        , 
                                                         index
                                                    
                                                
                                                        , 
                                                         message
                                                    
                                                
                                            )
                                        </code>
                                        
                                        <div class="description" property="yui:description">
                                            Asserts that the given value is contained in an array at the specified index.
This uses the triple equals sign so no type coercion will occur.
                                        </div>

                                        <div class="description">

                                                <dl rel="yui:parameters">
                                                    <dt>Parameters:</dt>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">needle</span>
                                                        &lt;<span property="yui:type">Object</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> The value to look for.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">haystack</span>
                                                        &lt;<span property="yui:type">Array</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> The array to search in.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">index</span>
                                                        &lt;<span property="yui:type">int</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> The index at which the value should exist.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">message</span>
                                                        &lt;<span property="yui:type">String</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> (Optional) The message to display if the assertion fails.</span>
                                                        </dd>
                                                </dl>



             

                                        </div>

                                    </div>
                                    <hr />
                                    </div>
                                    <div class="" rel="yui:method" resource="#method_isEmpty">
                                    <h4>
                                        <a name="method_isEmpty">isEmpty</a></h4>
                                    <div class="detail" >
                                        <code>
                                        
                                         static 
                                        
                                        void
                                            <strong property="yui:name">isEmpty</strong>
                                           (
                                                
                                                        
                                                         actual
                                                    
                                                
                                                        , 
                                                         message
                                                    
                                                
                                            )
                                        </code>
                                        
                                        <div class="description" property="yui:description">
                                            Asserts that an array is empty.
                                        </div>

                                        <div class="description">

                                                <dl rel="yui:parameters">
                                                    <dt>Parameters:</dt>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">actual</span>
                                                        &lt;<span property="yui:type">Array</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> The array to test.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">message</span>
                                                        &lt;<span property="yui:type">String</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> (Optional) The message to display if the assertion fails.</span>
                                                        </dd>
                                                </dl>



             

                                        </div>

                                    </div>
                                    <hr />
                                    </div>
                                    <div class="" rel="yui:method" resource="#method_isNotEmpty">
                                    <h4>
                                        <a name="method_isNotEmpty">isNotEmpty</a></h4>
                                    <div class="detail" >
                                        <code>
                                        
                                         static 
                                        
                                        void
                                            <strong property="yui:name">isNotEmpty</strong>
                                           (
                                                
                                                        
                                                         actual
                                                    
                                                
                                                        , 
                                                         message
                                                    
                                                
                                            )
                                        </code>
                                        
                                        <div class="description" property="yui:description">
                                            Asserts that an array is not empty.
                                        </div>

                                        <div class="description">

                                                <dl rel="yui:parameters">
                                                    <dt>Parameters:</dt>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">actual</span>
                                                        &lt;<span property="yui:type">Array</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> The array to test.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">message</span>
                                                        &lt;<span property="yui:type">String</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> (Optional) The message to display if the assertion fails.</span>
                                                        </dd>
                                                </dl>



             

                                        </div>

                                    </div>
                                    <hr />
                                    </div>
                                    <div class="" rel="yui:method" resource="#method_itemsAreEqual">
                                    <h4>
                                        <a name="method_itemsAreEqual">itemsAreEqual</a></h4>
                                    <div class="detail" >
                                        <code>
                                        
                                         static 
                                        
                                        void
                                            <strong property="yui:name">itemsAreEqual</strong>
                                           (
                                                
                                                        
                                                         expected
                                                    
                                                
                                                        , 
                                                         actual
                                                    
                                                
                                                        , 
                                                         message
                                                    
                                                
                                            )
                                        </code>
                                        
                                        <div class="description" property="yui:description">
                                            Asserts that the values in an array are equal, and in the same position,
as values in another array. This uses the double equals sign
so type coercion may occur. Note that the array objects themselves
need not be the same for this test to pass.
                                        </div>

                                        <div class="description">

                                                <dl rel="yui:parameters">
                                                    <dt>Parameters:</dt>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">expected</span>
                                                        &lt;<span property="yui:type">Array</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> An array of the expected values.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">actual</span>
                                                        &lt;<span property="yui:type">Array</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> Any array of the actual values.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">message</span>
                                                        &lt;<span property="yui:type">String</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> (Optional) The message to display if the assertion fails.</span>
                                                        </dd>
                                                </dl>



             

                                        </div>

                                    </div>
                                    <hr />
                                    </div>
                                    <div class="" rel="yui:method" resource="#method_itemsAreEquivalent">
                                    <h4>
                                        <a name="method_itemsAreEquivalent">itemsAreEquivalent</a></h4>
                                    <div class="detail" >
                                        <code>
                                        
                                         static 
                                        
                                        Void
                                            <strong property="yui:name">itemsAreEquivalent</strong>
                                           (
                                                
                                                        
                                                         expected
                                                    
                                                
                                                        , 
                                                         actual
                                                    
                                                
                                                        , 
                                                         comparator
                                                    
                                                
                                                        , 
                                                         message
                                                    
                                                
                                            )
                                        </code>
                                        
                                        <div class="description" property="yui:description">
                                            Asserts that the values in an array are equivalent, and in the same position,
as values in another array. This uses a function to determine if the values
are equivalent. Note that the array objects themselves
need not be the same for this test to pass.
                                        </div>

                                        <div class="description">

                                                <dl rel="yui:parameters">
                                                    <dt>Parameters:</dt>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">expected</span>
                                                        &lt;<span property="yui:type">Array</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> An array of the expected values.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">actual</span>
                                                        &lt;<span property="yui:type">Array</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> Any array of the actual values.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">comparator</span>
                                                        &lt;<span property="yui:type">Function</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> A function that returns true if the values are equivalent
or false if not.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">message</span>
                                                        &lt;<span property="yui:type">String</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> (Optional) The message to display if the assertion fails.</span>
                                                        </dd>
                                                </dl>



             

                                        </div>

                                    </div>
                                    <hr />
                                    </div>
                                    <div class="" rel="yui:method" resource="#method_itemsAreSame">
                                    <h4>
                                        <a name="method_itemsAreSame">itemsAreSame</a></h4>
                                    <div class="detail" >
                                        <code>
                                        
                                         static 
                                        
                                        void
                                            <strong property="yui:name">itemsAreSame</strong>
                                           (
                                                
                                                        
                                                         expected
                                                    
                                                
                                                        , 
                                                         actual
                                                    
                                                
                                                        , 
                                                         message
                                                    
                                                
                                            )
                                        </code>
                                        
                                        <div class="description" property="yui:description">
                                            Asserts that the values in an array are the same, and in the same position,
as values in another array. This uses the triple equals sign
so no type coercion will occur. Note that the array objects themselves
need not be the same for this test to pass.
                                        </div>

                                        <div class="description">

                                                <dl rel="yui:parameters">
                                                    <dt>Parameters:</dt>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">expected</span>
                                                        &lt;<span property="yui:type">Array</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> An array of the expected values.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">actual</span>
                                                        &lt;<span property="yui:type">Array</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> Any array of the actual values.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">message</span>
                                                        &lt;<span property="yui:type">String</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> (Optional) The message to display if the assertion fails.</span>
                                                        </dd>
                                                </dl>



             

                                        </div>

                                    </div>
                                    <hr />
                                    </div>
                                    <div class="" rel="yui:method" resource="#method_lastIndexOf">
                                    <h4>
                                        <a name="method_lastIndexOf">lastIndexOf</a></h4>
                                    <div class="detail" >
                                        <code>
                                        
                                         static 
                                        
                                        void
                                            <strong property="yui:name">lastIndexOf</strong>
                                           (
                                                
                                                        
                                                         needle
                                                    
                                                
                                                        , 
                                                         haystack
                                                    
                                                
                                                        , 
                                                         index
                                                    
                                                
                                                        , 
                                                         message
                                                    
                                                
                                            )
                                        </code>
                                        
                                        <div class="description" property="yui:description">
                                            Asserts that the given value is contained in an array at the specified index,
starting from the back of the array.
This uses the triple equals sign so no type coercion will occur.
                                        </div>

                                        <div class="description">

                                                <dl rel="yui:parameters">
                                                    <dt>Parameters:</dt>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">needle</span>
                                                        &lt;<span property="yui:type">Object</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> The value to look for.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">haystack</span>
                                                        &lt;<span property="yui:type">Array</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> The array to search in.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">index</span>
                                                        &lt;<span property="yui:type">int</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> The index at which the value should exist.</span>
                                                        </dd>
                                                        <dd rel="yui:parameter">
                                                        <code><span property="yui:name">message</span>
                                                        &lt;<span property="yui:type">String</span>&gt;
                                                        </code>
                                                        <span property="yui:description"> (Optional) The message to display if the assertion fails.</span>
                                                        </dd>
                                                </dl>



             

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                        <h4>Methods</h4>
                        <ul class="content">        
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                                <li class=""><a href="#method_doesNotContain" title="doesNotContain">doesNotContain</a></li>
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                                <li class=""><a href="#method_isNotEmpty" title="isNotEmpty">isNotEmpty</a></li>
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                        </ul>
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